The European Commission bases its investigation on the rules laid down in the Digital Services Act (DSA). This European legislation, introduced in 2022, imposes strict requirements on companies offering digital services in Europe.

In addition to TikTok, the social media company Meta, Facebook's parent company, is also under the investigation.

https://ec.europa.eu/commission/presscorner/detail/en/ip_24_...

Quoting: >The Commission is concerned that the systems of both Facebook and Instagram, including their algorithms, may stimulate behavioural addictions in children, as well as create so-called 'rabbit-hole effects'. In addition, the Commission is also concerned about age-assurance and verification methods put in place by Meta.

And before someone mentions the other? X - the everything app formally known as Twitter - is also under the Commission's scrutiny. It was fined approximately 120 million euro at the end of last year.